After three years spent waging a secret war against the former associates of Professor Moriarty, it’s time for Sherlock Holmes to emerge from the shadows and once again inhabit Baker Street. But first he must take down the most dangerous member of Moriarty’s network: the cold-blooded killer Colonel Moran. While Holmes moves his pawns, Moran releases his dogs, a pack of assassins led by the sinister Deadeye. Will Billy, Charlie, and Tom—and Watson the cat—be able to stop them before it’s too late?

Dive into the world of the Baker Street Irregulars and learn about our heroes’ past, including their very first case together! Explore everything from London’s East End to 221B Baker Street, and learn about Sherlock Holmes's most famous cases and Professor Moriarty’s most diabolical secrets.

Hailed by critics and audiences, The Baker Street Four series has received numerous awards and was featured in Angoulême in 2012.